Numerical and experimental demonstration of the electrical Bragg band gaps in piezoelectric plates with a periodic array of electrodes

Vasseur, Clement; Croënne, Charles; Dubus, Bertrand; Vasseur, J. O.; Hladky, Anne‐Christine; Prevot, Claude; Martins, P.; Pham‐Thi, M.

doi:10.1109/ultsym.2017.8092676

Cited by 1 publication

(1 citation statement)

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“…They have shown that it is possible to considerably modulate the properties of a PC made up of alternating piezoelectric and elastic layers by modifying the electrical boundary conditions of active inclusions. The case of the connexion of an electrical passive load across the piezoelectric element has been investigated, with an electrical open-circuit or short-circuit by Mansoura et al [16,17] in the case of bulk waves and by C. Vasseur et al [18] in the case of guided waves, and with resistive loads by Airoldi et al [19]. Frequency dependant electrical load have also been investigated with a capacitance by Degraeve et al [20][21][22] and Ponge et al [23,24], with an inductance by Mansoura et al [25], and with a resonant parallel LC load by E.A.…”

Section: Introductionmentioning

confidence: 99%

Electric control of a phononic crystal constituted of Piezoelectric layers using Schottky diode

Hatoumva¹,

Siryabe²,

Maréchal³

et al. 2022

Smart Mater. Struct.

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A one-dimensional piezoelectric phononic crystal (PPC) consisting of a periodic pattern made of two perfectly bonded materials: one active (piezoelectric), the other passive (elastic) and exhibiting a strong acoustic impedance contrast is studied. We are interested in the tunability of piezoelectric in clusions in order to control the propagation of ultrasonic waves in the MHz range from a nonlinear electrical component connected to the terminals of the piezoelectric elements. After modeling the dynamic resistance of the Schottky diode, based on the piezoelectricity equations, a one-dimensional analytical model is proposed to take into account the resistive impedance effect of this diode connected to the electrodes of the active plate. Thus, we have shown that the application of various electrical boundary conditions (EBCs) on the electrodes (open-circuit, short-circuit, connecting an electrical load) allows to change the effective properties of the piezoelectric plate in particular and those of the PPC in general. The dispersion of the waves is then electrically tuned and, depending on the applied EBCs, we have demonstrated numerically the possibility of opening Bragg or hybridization gaps in the PPC bands structure.

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